| Message ID | 0eec85fb314d26159cb75600a4b39985d393ccf8.1597233555.git.christophe.leroy@csgroup.eu (mailing list archive) |
|---|---|
| State | RFC |
| Headers | show |
| Series | powerpc: Switch signal 32 to using user_access_begin() and friends | expand |
| Context | Check | Description |
|---|---|---|
| snowpatch_ozlabs/apply_patch | success | Successfully applied on branch powerpc/merge (f04b169e953c4db1a3a3c1d23eea09c726f01ee5) |
| snowpatch_ozlabs/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 31 lines checked |
| snowpatch_ozlabs/needsstable | success | Patch has no Fixes tags |
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h index e20b0c5abe62..8320aedbdca3 100644 --- a/arch/powerpc/include/asm/processor.h +++ b/arch/powerpc/include/asm/processor.h @@ -406,20 +406,6 @@ static inline void prefetchw(const void *x) #define HAVE_ARCH_PICK_MMAP_LAYOUT -#ifdef CONFIG_PPC64 -static inline unsigned long get_clean_sp(unsigned long sp, int is_32) -{ - if (is_32) - return sp & 0x0ffffffffUL; - return sp; -} -#else -static inline unsigned long get_clean_sp(unsigned long sp, int is_32) -{ - return sp; -} -#endif - /* asm stubs */ extern unsigned long isa300_idle_stop_noloss(unsigned long psscr_val); extern unsigned long isa300_idle_stop_mayloss(unsigned long psscr_val); diff --git a/arch/powerpc/kernel/signal.c b/arch/powerpc/kernel/signal.c index 1be5fd01f866..a295d482adec 100644 --- a/arch/powerpc/kernel/signal.c +++ b/arch/powerpc/kernel/signal.c @@ -150,7 +150,10 @@ void __user *get_sigframe(struct ksignal *ksig, unsigned long sp, unsigned long oldsp, newsp; /* Default to using normal stack */ - oldsp = get_clean_sp(sp, is_32); + if (is_32) + oldsp = sp & 0x0ffffffffUL; + else + oldsp = sp; oldsp = sigsp(oldsp, ksig); newsp = (oldsp - frame_size) & ~0xFUL;
get_clean_sp() is only used once in kernel/signal.c . And GCC is smart enough to see that x & 0xffffffff is a nop calculation on PPC32, no need of a special PPC32 trivial version. Include the logic from the PPC64 version of get_clean_sp() directly in get_sigframe() Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> --- arch/powerpc/include/asm/processor.h | 14 -------------- arch/powerpc/kernel/signal.c | 5 ++++- 2 files changed, 4 insertions(+), 15 deletions(-)